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Title: Sigma photoproduction in the resonance region
Authors: Janssen, S ×
Ryckebusch, J
Debruyne, Dimitri
Van Cauteren, T #
Issue Date: Sep-2002
Publisher: American physical soc
Series Title: Physical review c vol:66 issue:3
Abstract: A study of gammap-->KSigma processes in an isobar model at tree level is reported. By comparing model calculations to the published SAPHIR data, we explore the possible role of different isospin I=1/2 (N*) and I=3/2(Delta*) resonances in the reaction dynamics. In our analysis, the inclusion of the "missing" D-13(1895) resonance does only slightly improve the global description of the Sigma photoproduction data. More convincing signals for the presence of such a "missing" resonance emerged in the analysis of the isospin related gammap-->K(+)Lambda reaction. Various implementations of the nonresonant part of the Sigma photoproduction amplitude are presented. The sensitivity of the computed observables and extracted resonance parameters to the uncertainties inherent to the treatment of the nonresonant (background) diagrams are discussed.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
Materials Technology TC, Technology Campuses Ghent and Aalst
Technologiecluster Materialentechnologie
× corresponding author
# (joint) last author

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